Companies conducting offshore drilling operations in the northern Artic
region maintain that their compliance with regulations that pertain to the safety of marine life in the area are responsible for the decrease in pollution levels in the region.
(A) region maintain that their compliance with regulations that pertain to the safety of marine life in the area are
(B) region, maintaining that their compliance with regulations pertaining to the safety of marine life in the area, are
(C) region maintain that their compliance with regulations pertaining to the safety of marine life in the area is
(D) region that maintain that their compliance with regulations pertaining to the safety of marine life in the area is
(E) region maintain that their compliance with regulations that pertain to the safety of marine life in the area, which is